Calcium-aluminum-rich inclusions in enstatite chondrites (I): Mineralogy and textures

Calcium - Aluminum - Rich Inclusions Lead Isotopic Ages

. clicking here colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others . here following the guidelines can be obtained by Permission to republish or repurpose articles or portions of articles (this information is current as of September 10, 2010 ): The following resources related to this article are available online at ...

Calcium-Aluminum-rich Inclusions: Major Unanswered Questions

Calcium-aluminum-rich inclusions (CAIs) preserve a record of events in the earliest solar system, the timing of these events and the conditions under which they occurred. Recent technical (analytical instrumentation) and theoretical advances have enabled researchers to extract an astonishing wealth of new information from CAIs, such as: (1) all CAIs may have formed in a restricted region or reg...

Oxygen isotopes in calcium^aluminum-rich inclusions from enstatite chondrites: new evidence for a single CAI source in the solar nebula

Calcium^aluminum-rich inclusions (CAIs) from enstatite chondrites have large 16O excesses, similar to CAIs in carbonaceous and ordinary chondrites, and are also similar in morphology, mineralogy and Al^Mg isotopic systematics. These similarities provide new evidence that most CAIs might have formed in a single, restricted nebular locale and were then distributed unevenly throughout the various ...

MICROSTRUCTURAL ANALYSIS OF CALCIUM - ALUMINUM - RICH INCLUSIONS by

A study of the minor element concentrations of spinels from two type B calcium-aluminum-rich inclusions: An investigation into potential formation conditions of calcium-aluminum-rich inclusions

We have conducted an electron microprobe study of minor element distributions among spinels from two type B 1 calcium-aluminum-rich inclusions (CAIs): Allende TS-23 and Leoville 3537-2. We show that by maintaining the petrologic context (edge, middle, and center of the inclusion plus their host silicate phase), four populations of spinels are resolvable based on their minor element contents. On...